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Data release accompanying quantitative mineral resource assessment of lithium pegmatite deposits in the Northern Appalachian Orogen, USA

January 7, 2026

The area of study is restricted to the northern Appalachian region between latitudes 38N and 48N and longitudes 66W and 77W in the U.S. states of Maine, New Hampshire, Vermont, New York, Massachusetts, Connecticut, Rhode Island, Pennsylvania, and Delaware. This study (Wintzer and others, 2025) integrates data from several sources, including geologic, geochemical, geophysical, watershed analysis, and mineral sites with recently developed grade and tonnage models, expert estimates, and software tools and analyses to generate probabilistic estimates of undiscovered lithium pegmatite resources. These data are presented in several formats: shapefiles, and tabular (csv) data. Several layers or individual files are derived or contain data from U.S. Geological Survey (USGS) and other existing, published sources.

Publication Year 2026
Title Data release accompanying quantitative mineral resource assessment of lithium pegmatite deposits in the Northern Appalachian Orogen, USA
DOI 10.5066/P1B8UATM
Authors Lucas L Evart, Geoffrey Phelps, Niki E Wintzer, Christopher S Holm-Denoma, Jacob E Poletti, Stanley P Mordensky, Collin Cronkite-Ratcliff, Erik R Tharalson, Dalton M. McCaffrey, Donald Sweetkind
Product Type Data Release
Record Source USGS Asset Identifier Service (AIS)
USGS Organization Geology, Minerals, Energy, and Geophysics Science Center
Rights This work is marked with CC0 1.0 Universal
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